This is automatic in CPython but not guaranteed by the language. Be friendly
to other Python implementations.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Passing arguments on the command line apparently didn't work due to quoting
issues. Use a temporary file instead.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Wherever we have a requirement on foo>=N, install foo==N. This is for
testing, to ensure that we don't accidentally depend on features that are
not present in the minimum version we declare support for.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>